Gays with a “main partner” have concurrent casual sexual relationships

An interesting recent paper (Rosenberg, Sullivan, Dinenno, Salazar, & Sanchez, 2011) confirms that most gay men with one main partner for a given year also have concurrent casual sexual relationships. Main partner is defined as a person to whom one is committed above all others.

http://www.mygenes.co.nz/MainPartners.htm